From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3033FC43457 for ; Sat, 10 Oct 2020 05:33:03 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D37C4207FB for ; Sat, 10 Oct 2020 05:33:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="K5T3/QC2" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D37C4207FB Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:References:In-Reply-To:Message-Id:Date:Subject:To: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=4QWxwL5rjj8oURhd/1huarI2kKD46d/9cGKMkEUr9v0=; b=K5T3/QC23iUjKOglV/6jPZ7Zd7 qNI1P5cxcEgwSmNaOTRxxFpKuu3OvBUPfd8WO4zjc+Jq8lnsmhMbFzCYF3NZYCJg0z2wjMkYEC1+D wrcA0KDVqMydG7ydaJvgMF0xAB4RrRwDOSTBbviUhn+rv0P5PI/OYVNe9RQaRzNyHqQg3cUekf09N zdljqZl2bOIBhEffchUEdFm2BFcnfOxo3MhcglsFGyoOnkszZbFRxX2GP3aojiTdOv7ZiisP9r/Gm 6B+wElN5dB1zJt5GXx7cDZ1Qu5QKyYyhTIW0eR8E139MwJIhSmEnxdv/dr3hzeH3QjE4j0BKCaqYV +cdX2wDA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kR7UT-0003f0-Ce; Sat, 10 Oct 2020 05:32:21 +0000 Received: from alexa-out.qualcomm.com ([129.46.98.28]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kR7UK-0003c2-CO for linux-mtd@lists.infradead.org; Sat, 10 Oct 2020 05:32:13 +0000 Received: from ironmsg-lv-alpha.qualcomm.com ([10.47.202.13]) by alexa-out.qualcomm.com with ESMTP; 09 Oct 2020 22:32:10 -0700 X-QCInternal: smtphost Received: from ironmsg02-blr.qualcomm.com ([10.86.208.131]) by ironmsg-lv-alpha.qualcomm.com with ESMTP/TLS/AES256-SHA; 09 Oct 2020 22:32:08 -0700 X-QCInternal: smtphost Received: from mdalam-linux.qualcomm.com ([10.201.2.71]) by ironmsg02-blr.qualcomm.com with ESMTP; 10 Oct 2020 11:01:44 +0530 Received: by mdalam-linux.qualcomm.com (Postfix, from userid 466583) id 19D3421ADC; Sat, 10 Oct 2020 11:01:43 +0530 (IST) From: Md Sadre Alam To: agross@kernel.org, bjorn.andersson@linaro.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com, robh+dt@kernel.org, linux-arm-msm@vger.kernel.org, linux-mtd@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 3/5] mtd: rawnand: qcom: Read QPIC version Date: Sat, 10 Oct 2020 11:01:40 +0530 Message-Id: <1602307902-16761-4-git-send-email-mdalam@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1602307902-16761-1-git-send-email-mdalam@codeaurora.org> References: <1602307902-16761-1-git-send-email-mdalam@codeaurora.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201010_013212_534867_C689CB90 X-CRM114-Status: GOOD ( 12.29 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mdalam@codeaurora.org, sricharan@codeaurora.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org This change will add support to read QPIC version. QPIC version V2.0 onwards some new register introduced in QPIC. So based on hw_version we will update those register. Signed-off-by: Md Sadre Alam --- drivers/mtd/nand/raw/qcom_nandc.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/mtd/nand/raw/qcom_nandc.c b/drivers/mtd/nand/raw/qcom_nandc.c index f5064ab..eabb803 100644 --- a/drivers/mtd/nand/raw/qcom_nandc.c +++ b/drivers/mtd/nand/raw/qcom_nandc.c @@ -443,6 +443,7 @@ struct qcom_nand_controller { u32 cmd1, vld; const struct qcom_nandc_props *props; + u32 hw_version; }; /* @@ -2538,6 +2539,7 @@ static int qcom_nand_attach_chip(struct nand_chip *chip) int ecc_mode = 1; int num_addr_cycle = 5, dsbl_sts_aftr_write = 0; int wr_rd_bsy_gap = 2, recovery_cycle = 7; + u32 version_reg; /* controller only supports 512 bytes data steps */ ecc->size = NANDC_STEP_SIZE; @@ -2545,6 +2547,26 @@ static int qcom_nand_attach_chip(struct nand_chip *chip) cwperpage = mtd->writesize / NANDC_STEP_SIZE; /* + * Read the required ecc strength from NAND device and overwrite the + * device tree ecc strength + */ + if (chip->base.eccreq.strength >= 8) + ecc->strength = 8; + + /* Read QPIC version register */ + if (nandc->props->is_serial_nand) + version_reg = (NAND_VERSION + 0x4000); + else + version_reg = NAND_VERSION; + nandc->hw_version = nandc_read(nandc, version_reg); + pr_debug("QPIC controller hw version Major:%d, Minor:%d\n", + ((nandc->hw_version & NAND_VERSION_MAJOR_MASK) + >> NAND_VERSION_MAJOR_SHIFT), + ((nandc->hw_version & NAND_VERSION_MINOR_MASK) + >> NAND_VERSION_MINOR_SHIFT)); + nandc->hw_version = ((nandc->hw_version & NAND_VERSION_MAJOR_MASK) + >> NAND_VERSION_MAJOR_SHIFT); + /* * Each CW has 4 available OOB bytes which will be protected with ECC * so remaining bytes can be used for ECC. */ -- 2.7.4 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/